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Finding the Fourth Proportional to 707,959,790.47, 976,674,574.01 and 675,136,665.50

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Solution

The fourth proportional to 707,959,790.47, 976,674,574.01 and 675,136,665.50 is: 931,393,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,959,790.47 : 976,674,574.01 = 675,136,665.50 : x
  2. Step 2: Convert to fraction form
    707,959,790.47/976,674,574.01 = 675,136,665.50/x
  3. Step 3: Cross multiply
    707,959,790.47x = 976,674,574.01 × 675,136,665.50
  4. Step 4: Simplify right side
    707,959,790.47x = 659,388,815,172,368,640
  5. Step 5: Solve for x
    x = 659,388,815,172,368,640/707,959,790.47
  6. Step 6: Final answer
    x = 931,393,031.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.